Re: Trailing slash in custom command
                Patterns cannot be used in the default value of a prompt.
Though you can implement such default using shell constructs.
    
Regarding the other question, you can again use shell tricks like:
    
                
            
        Though you can implement such default using shell constructs.
FROM=!?From (keep empty for selected file):! && rsync -a --delete "${FROM:-!/!}" ...
Regarding the other question, you can again use shell tricks like:
rsync -a --delete "!/!" "!?To:?!""/"